Gypsum - Wikipedia

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4 2H 2 O It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard chalk and wallboardA massive fine-grained white or lightly tinted variety of gypsum, called alabaster, has been used for sculpture by many cultures including Ancient ....

Phosphogypsum - Wikipedia

Phosphogypsum refers to the calcium sulfate hydrate formed as a by-product of the production of fertilizer from phosphate rockIt is mainly composed of gypsum (CaSO 4 2H 2 O) Although gypsum is a widely used material in the construction industry, phosphogypsum is usually not used, but is stored indefinitely because of its weak radioactivityThe long-range storage is controversial...

Model main object clause of more than 500 types of ,

ACIDS AND ALKALIES To carry on business as manufacturers, producers, processors, growers, fermentators, distillers, refiners, makers, inventors, convertors ....

Lawriter - OAC

(b) A one-time notification and certification shall be placed in the facility's files and sent to the director for K061, K062, or F006 HTMR residues that meet the generic exclusion levels for all constituents and do not exhibit any characteristics that are sent to licensed solid waste landfills...